RSD5200 Fingertip Pulse Oximeter Details： Description:                                                 The 5200 Pulse Oximeter, four direction OLED display, is intended for noninvasive spot-check measurement of functional oxygen saturation of arterial hemoglobin(SpO2). The product is suitable for being used in family, hospital, oxygen bar, community healthcare, physical care in sports (It can be used before or after doing sports,  and it is not recommended to use the device during the process of having sport) and etc.     Features:                                                       1.Reliable accuracy and durability 2.Two Color OLED Display, four display modes. 3.4-Direction Display adjustable. 4.Low voltage indicator, Real-time spot-checks. 5.Can measure SPO2,PR accurately. 6.SPO2 and PR display,PR waveform and bargraph display 7.Battery voltage low indication. 8.Low power consumption; Automatic power off when no signal   Low power consumption,50 hours continuous to work.   Low Perfusion less than 0.4% 9.Pulse sound function 10.Alarm function 11.Small and light weight, convenient to carry   Parameters:                                            1.4 direction colour OLED display,resolution 96*64 2.SPO2:35%-99% 3.Pulse Ratio:30-250BPM 4.Resolution:1% for SPO2,1BPM for pulse ratio 5.Accuracy:2%(70%-99%)                 unspecified(<70%) for SPO2                 2BPM or 2%(select larger) for pulse ratio 6.Power by :1.5V AAA battery    7.Can work more than 30 hours continuously 8.Resistance capacity against ambient light and measurement perfermance at low perfusion 9.Auto power-off function,four directions,eight modes.   Packing:                                                                              1.main unit 2.user manual